We're dividing 78891476 by 225 
The aim is to understand the frequency of 225 in 78891476.

On to step 1:
When dividing 7 by 225, we get 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 225

Step 2:
If we divide 78 by 225, we get 0 and a remainder of 78.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 78 leaves us with 78.
Append the next digit (8) from the dividend to 78 and continue with: 788 / 225

On to step 3:
When dividing 788 by 225, we get 3 with a remainder of 113.
The next digit of our result is 3. 
Result so far: 3.0
The remainder is 113 after subtracting 675 from 788.
Bring next digit (9) of the dividend behind the 113 and repeat the process: 1139 / 225

Step 4:
1139 divided by 225 is 5 with a remainder of 14.
The number 5 becomes the next digit in our result. 
Result so far: 35.0
Deduct 1125 from 1139 and we're left with 14.
Take the next digit (1) from the dividend and append it to 14, then repeat: 141 / 225

Going ahead to step 5:
When dividing 141 by 225, we get 0 with a remainder of 141.
The next digit of our result is 0. 
Result so far: 350.0
Deduct 0 from 141 and we're left with 141.
Take the next digit (4) from the dividend and append it to 141, then repeat: 1414 / 225

On to step 6:
1414 divided by 225 is 6 with a remainder of 64.
Record the quotient 6 as the next digit in the result. 
Result so far: 3506.0
If we subtract 1350 from 1414, we get 64.
Bring next digit (7) of the dividend behind the 64 and repeat the process: 647 / 225

Going ahead to step 7:
When dividing 647 by 225, we get 2 with a remainder of 197.
The next digit of our result is 2. 
Result so far: 35062.0
If we subtract 450 from 647, we get 197.
Take the next digit (6) from the dividend and append it to 197, then repeat: 1976 / 225

On to step 8:
If we divide 1976 by 225, we get 8 and a remainder of 176.
The next digit of our result is 8. 
Result so far: 350628.0
Subtract 1800 from 1976 to get 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Moving on to step 9:
When dividing 1760 by 225, we get 7 with a remainder of 185.
Put 7 as the next digit of the answer. 
Result so far: 350628.7
Deduct 1575 from 1760 and we're left with 185.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

On to step 10:
When dividing 1850 by 225, we get 8 with a remainder of 50.
Record the quotient 8 as the next digit in the result. 
Result so far: 350628.78
The remainder is 50 after subtracting 1800 from 1850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 11:
If we divide 500 by 225, we get 2 and a remainder of 50.
Use 2 as the next digit of our solution. 
Result so far: 350628.782
The remainder is 50 after subtracting 450 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 12:
When dividing 500 by 225, we get 2 with a remainder of 50.
The number 2 becomes the next digit in our result. 
Result so far: 350628.7822
The remainder is 50 after subtracting 450 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

After the division, we end up with 350628.7822 and a remainder of 0.0005.